Respuesta :
Answer:
27
Step-by-step explanation:
155 , 152 , 149
term rule = n- 3
30th term
n-3
substitute n for 30
30-3=27
Answer:
68
Step-by-step explanation:
D = -3
an = a1 + (n-1)d
a30= 155 + (30-1)-3
a30 = 155 + 29(-3)
a30 = 155 + (-87)
a30 = 68
